Jose canalej



M. BURDiEL RODRIGUEZ. ELECTRIC CURRENT INTERRUPTRR. APPLICATION FILED 05022. 1917.:

Patented May 20, 1919.

MA M; Rainy? the followin MIGUEL BURDIEL RODRIGUEZ, OF MADRID, SPAIN.

ELECTRIC-CURRENT INTERRUPTER.

Specification of Letters Patent.

Application filed December 22, 1917; Serial No. 208,498.

To all whom it may concern:

Be it known that I, MIGUEL Brmnmn Ro- DRIGUEZ, subject of the King of Spain, residing at Madrid, Spain, have invented certain new and useful Improvements in Electric- Current Interrupters; and do hereby declare to be a full, clear, and exact description 0 the invention, such as will ena'ble others skilled in the art to which it apert-ains to make and use the same, reference eing had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in switches and has particular reference to an electric switch of the rotary type.

An important object of the invention is to provide a switch 'ofi .the above mentioned character, which is simple in construction, cheap to manufacture, and convenient in use.

In the accompanying drawings forming a part of this specification and in which like numerals are employed to designate like parts throughout the same,

Figure l is a side elevation of a switch embodying my invention,

Fig. 2 is a central vertical sectional view through the same,

Fig. 3 is a plan view of the same,

Fig. 4-is a bottom plan view of the same,

Fig. 5 is a side elevation, partly in sec tion, of the casing or body portion of the switch, and,

Fig. 6 is a bottom plan view of the same, partly insection.

In the drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 4 designates a casing, constituting the body portion of the switch. This casing is preferably formed of insulating material. The casing 4 is provided with openings 5 for the reception of screws or the like, to attach the same to a suitable support.

The casing 4 1s provided with an upper or outer chamber 7, Which is preferably formed square, as shown. This chamber leads into an inner or lower chamber 8, preferably formed circular. The chambers 7 and 8 form horizontal shoulders 8', as shown.

The casing 4 is provided centrally thereof with an opening 9', rotatably receiving a stem 9 of a handle 9.

The casing 4 has openings or recesses 10 formed therein, passing through the shoulders 8'. These recesses have fillers 11, having screw-threaded openings for the reception of screws 12. These screws carry'washers 13, engaging contact plates 14. These contact plates are L-shaped in cross section, and fit over the shoulders 8'. The vertical portions 14 of the contact plates project into the outer chamber 7. The screws 12 may also be employed to connect lead-wires with the contact plates 14.

The lower end of the stem 9*- has a longitudinal slot 15, which loosely receives the intermediate portion of a suitably flexible and resilientspring 16. This spring is held in place by a cotter pin 17. passing through openings in the lower end of the stem 9".

The handle 9 is adapted to be turned in one direction for bringing the ends of the spring 16 into engagement with the contact plates 14, for closing the circuit. This handle and stem are preferably formed of insulating material.

his to be understood that the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement of parts, may be resorted to without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention I claim:

1. A switch of the character described comprising, a casing provided with a chamber having a deep central polygonal portion and an enlarged circular portion, the walls between the polygonal and circular portions forming shoulders, said casing having a central opening; contact plates formed L-shapcd in cross section and arranged upon said shoulders; a handle having a shank rotata ble within said opening and provided with a transverse slot; a substantially S-shaped spring having its intermediate portion disposed within the transverse slot. and means to retain the spring within the slot.

2. A switch of the character described, comprising a casing provided with a chamber having a deep central square portion and a circular portion, the walls between the square portion and the circular portion forming shoulders. said casing being provided in its upper end with a central opening; contact plates formed L-shaped in cross Patented May 20, 1919.

section fitting upon said shoulders; screws attaching the contact plates to said shoulders; a handle having a vertical depending shank rotatable within said opening and having a transverse slot formed through the lower end thereof; a' substantially S- shaped spring having its intermediate portion fitting loosely Within the transverseslot; and a transverse pin carried byethe loti er end of the shank and passing across the slot to 10 retain the spring in place.

In testimony whereof I have signed my name to this specification in the presence of two subscribingwitnesSes.

MIGUEL BURDIEL RODRIGUEZ.

W'itnesses:

J CANALEJAR BLED, Armoxsn Aornnnn AUER. 

